Engineering Worksheet: Earthquake-Safe Buildings

Engineering lesson 21: Earthquake-safe buildings · Set 804 · 40 questions

Engineer's tip (Low, wide, flexible): Safer: wide base, flexible joints, bracing, steel in concrete, light roof, rubber pads, simple shape. Less safe: heavy tops, narrow bases, loose bricks, no steel, brittle joints. Tipping: compare height ÷ base width — the smaller it is, the steadier the block.

1. 1.Which of these makes a building less safe in earthquakes? (a) raising heavy tanks high (b) fitting rubber base pads (c) adding cross bracing (d) having a wide base
2. 2.🏚️ Does using flexible joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
3. 3.🏚️ Three solid model towers are made of the same material. Tower A is 120 cm tall on a 20 cm wide base, tower B is 90 cm tall on a 30 cm base and tower C is 150 cm tall on a 30 cm base. Which is the easiest to tip over? (a) tower A (b) tower B (c) tower C
4. 4.🏚️ Does having a wide base make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
5. 5.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 70 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
6. 6.True or false: making brittle joints makes a building safer in earthquakes. (a) False (b) True
7. 7.🏚️ Does adding steel to concrete make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
8. 8.🔍 Which is the odd one out? (a) making brittle joints (b) building tall and narrow (c) keeping a simple shape (d) raising heavy tanks high
9. 9.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) building tall and narrow (c) using a light roof (d) leaving out steel bars
10. 10.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) raising heavy tanks high (c) having a wide base (d) stacking loose bricks
11. 11.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 30 cm tall on a 10 cm base and tower C is 80 cm tall on a 40 cm base. Which is the hardest to tip over? (a) tower B (b) tower A (c) tower C
12. 12.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) making brittle joints (c) building tall and narrow (d) adding cross bracing
13. 13.🏚️ Where should heavy water tanks go in a quake zone? (a) hanging outside (b) low down (c) on a thin pole (d) on the very top
14. 14.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 60 cm tall on a 10 cm base and tower C is 120 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
15. 15.🔍 Which is the odd one out? (a) stacking loose bricks (b) using a heavy roof (c) raising heavy tanks high (d) using flexible joints
16. 16.Which of these makes a building safer in earthquakes? (a) using a heavy roof (b) leaving out steel bars (c) keeping a simple shape (d) building tall and narrow
17. 17.🏚️ Why are flexible joints good in an earthquake? (a) they stop shaking (b) they look nice (c) they are cheap (d) they bend, not break
18. 18.🏚️ Does using a heavy roof make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
19. 19.🏚️ Does adding cross bracing make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
20. 20.🔍 Which is the odd one out? (a) adding steel to concrete (b) using a heavy roof (c) having a wide base (d) adding cross bracing
21. 21.🏚️ Three solid model towers are made of the same material. Tower A is 210 cm tall on a 30 cm wide base, tower B is 50 cm tall on a 10 cm base and tower C is 160 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
22. 22.🔍 Which is the odd one out? (a) adding cross bracing (b) fitting rubber base pads (c) keeping a simple shape (d) building tall and narrow
23. 23.🏚️ Does making brittle joints make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe
24. 24.🔍 Which is the odd one out? (a) making brittle joints (b) using a heavy roof (c) raising heavy tanks high (d) adding cross bracing
25. 25.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 20 cm wide base, tower B is 100 cm tall on a 20 cm base and tower C is 240 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower C (b) tower B (c) tower A
26. 26.Which of these makes a building less safe in earthquakes? (a) adding cross bracing (b) fitting rubber base pads (c) leaving out steel bars (d) using flexible joints
27. 27.🏚️ Three solid model towers are made of the same material. Tower A is 90 cm tall on a 30 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 180 cm tall on a 30 cm base. Which is the hardest to tip over? (a) tower A (b) tower B (c) tower C
28. 28.Which of these makes a building safer in earthquakes? (a) raising heavy tanks high (b) making brittle joints (c) fitting rubber base pads (d) using a heavy roof
29. 29.🔍 Which is the odd one out? (a) stacking loose bricks (b) fitting rubber base pads (c) raising heavy tanks high (d) using a heavy roof
30. 30.🏚️ Three solid model towers are made of the same material. Tower A is 40 cm tall on a 10 cm wide base, tower B is 180 cm tall on a 30 cm base and tower C is 320 cm tall on a 40 cm base. Which is the easiest to tip over? (a) tower A (b) tower C (c) tower B
31. 31.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 10 cm wide base, tower B is 80 cm tall on a 20 cm base and tower C is 60 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower B (b) tower C (c) tower A
32. 32.True or false: using flexible joints makes a building less safe in earthquakes. (a) False (b) True
33. 33.Which of these makes a building less safe in earthquakes? (a) making brittle joints (b) adding cross bracing (c) using a light roof (d) having a wide base
34. 34.🏚️ Three solid model towers are made of the same material. Tower A is 60 cm tall on a 30 cm wide base, tower B is 120 cm tall on a 40 cm base and tower C is 80 cm tall on a 20 cm base. Which is the easiest to tip over? (a) tower C (b) tower A (c) tower B
35. 35.True or false: fitting rubber base pads makes a building less safe in earthquakes. (a) True (b) False
36. 36.True or false: using a light roof makes a building safer in earthquakes. (a) True (b) False
37. 37.True or false: having a wide base makes a building safer in earthquakes. (a) False (b) True
38. 38.🏚️ Does keeping a simple shape make a building safer or less safe in an earthquake? (a) less safe (b) safer in earthquakes
39. 39.True or false: making brittle joints makes a building less safe in earthquakes. (a) True (b) False
40. 40.🏚️ Does raising heavy tanks high make a building safer or less safe in an earthquake? (a) safer in earthquakes (b) less safe

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